Method of producing plastic composition.



. ducing a plastic composition designed to be .fi'gures and the like.

UNITED STATES PATENT OFFICE.

HERMANN SCHUDT, OF GHARLOTTENBURG, GERMANY.

METHOD OF PRODUCING PLASTIC COMPCSITI EON.

Specification of Letters Patent.

Patented-bee. 17,1907.

- I Application filed April 3.1907. Boi-inlli'o. 366.928.

To all whom it may concern: v Be it known that I, HERMAN'N Sonunr, a

' subject of the King of Prussia, and resident of 57 Schluterstrasse,Charlottenburg, near Berlin, German Empire, have invented a Method ofProducing Plastic Composition, of which the following is an exact secification. My invention relates to a met .od of pro-' known, that theusual materials for applying air-tight vessels.

purposes, which consist mostly of lime, emery and gypsum, adhere only toa roughened base, but not, as often required, on grounds ,diiferentnatures or on plain grounds. Again the known material hitherto used bysculptors for shaping or molding purposes is unsuitable for impregnatinfabrics.

Now my invention has or its object, to rovide a material to overcome allthese deeots, and to this end, infusorial earth and a solution of glueis so mixed as to form a very sticky paste or mass.

Linseed oil is then heated and mixed with molten resin, and thefollowing are the pro ortions which have been found to be suitab e,vim-1%- liters of linseed oil and 150 rams of moltenresin to 10kilograms of sorial earth. The linseed oil. and resin while in a heatedstate is incorporated with the mixture ofinfusorial earth and. glue andworked into a uniform composition, a strong solution of soap-water thenbeing added to this composition which is thereby rendered suitable formodeling purposes or for impregnating tissues or cords.

he binding power of the composition is in no way diminished however bythe addition of soap-water, as hereinbefore stated. The

composition is now mixed with finely cut tow E and passed through a millafter which the finished composition is stored u in suitable It may be 0served that in practice, the plastic mass obtained as hereinbeforedescribed, for impregnating fabrics, must be of a thicker or thinnerconsistency according to the particular requirements.

A considerable advantage of this com osition over the known materialsfor applying stucco, 'lies' in the fact that the latter requires to befreshly prepared for each application, whereas my new composition,remains fresh and useful in the closed vessel for a very;-long period,for instance for several years. When applied, the composition 00 ealsafter a very short time without alteration in its volume as for.example, by shrinkage. It combines directly with any plastering onceilings a or on walls, which latter. require no ro hening, while thenew composition also ad eres to wood and metal, for instance, irongirders also to burnt clay, suchasvases 'or furnaces to be decorated;and to marble and glass. The latter (property is of especial value inframing an bordering mirrors and mosaics of lass, the material adheringto glass as wel as to plastering.

The material can advantageously be used for lining purposes as forinstance in the insulating of conduits through which warm or coldmediums pass. The lining is carried out bycoating the conduit withthe'com osition and forming a layer of more or ess' thickness thereof onthe conduit. The mass adheres without requiring any fastening means tothe conduit and dries without becoming cracked, and thus forms a veryrigid covering, resisting heat and atmospheric 1niluences. Thesurrounding of the conduit, as hitherto usual, with strips of clothliable to catch fire and. expensive i t us perfectly avoided. Havingthus fully described the natura -of my invention, what I desire tosecure by Letters Patent of the United States is:- 1. A method ofroducing plastic compo; sition, designed to e employed for apply ngstucco, or for insulating and impre ating ormmg 2. A method of 'roducingplastic composition, designed to e employed for applying stucoo orforinsulating and impregnating In witness whereof I have hereunto set mypurposes and the like, consisting in 'formlng hand in the presence oftwo Witnesses. a sticky paste of infusorial' earth and glue,

, T Y rnixing with this paste heated oil and resin, HERMABN SCHUDT'adding to the mixture at strong--olution of Witnesses: soap andintroducing tow in the mixture HENRY HASPER,

thus obtained. VVOLDEMAR HAUPT

